Vise



E. GOODREAU.

VISE.

APPLICATION FILED DEC, 29. l92l.

1,430,226. Pa tentedSept. 26,1922.

WITNESSES Jwmvroa 9 I varz'st- Goo reau,

A TTOR/VEYS Patente Sept. 26, 1922.

EVARIS'I eoonRnnu, or CORDOVA, rERRI'roRY or ALASKA.

VIsB.

Application filed December 29, 1921. Serial No. 525,618.

To all whom it may concern:

Be it known that I, EVARIST GoooRnAU, a citizen of the United States, and resident of Cordova, Territory of Alaska, have invented certain new and useful Improvements in Vises, of which the following is a specification.

This invention relates to. a pneumatic vise.

The object of the invention is to associate pneumatic means with a pair of jaws constituting a vise whereby the same may be actuated for gripping an object therebetween, in a positive manner.

It is also an object of the invention that the device be adapted for releasing an object gripped between the jaws in a quick and expeditious manner.

A further object of the invention is that the device be extremely simple in construction and easy to manipulate.

Other objects relatlng to details of construction, combination and arrangement of I parts will hereinafter appear in the detailed description to follow.

The invention is illustrated by way of example in the accompanying drawing, in

Figure 1 is a perspective view of a pneumatic vise constructed in accordance with the present invention,

Figure 2 is a side elevation of the same and showin the cylinder associated therewith in longitudinal cross section,

Figures 3' and 4. are vertical sectional viewstaken substantially on lines 33 and 1-4: respectively of Fig. 2.

Referring to the drawings more particularly 10 indicates generally a base plate which may have-formed upon one longitudinal edge a slotted flange 11 whereby through the medium of bolts or the like the base platemay be adjustably secured to a support or foundation. Adjacent the forward end of the plate 10 is formed an upstanding jaw 12 which is braced by the web plate 13. Extending rearwardly of the aw 12 to the other end of the plate 10 is a rail generally indicated by the reference numeral 13, said rail being of solid formation and integral with the base plate 10. Extending along each ion itudinal edge of the rail 13 is a groove 14. fipon the rail 13 there is positioned a second 'aw 15 which is formed at its end with an L- aped flange'l6 the free portion of which is adapted to slide within an associated groove 14. The jaw 15 is othered to slide in the associated wise substantially the same shape as the jaw 12 with the exception that the aw 15 has a rearwardly extending portion 19 and upon the rear face of the aw there is formed an enlargement 20 the purpose of which will later ecome apparent.

To the rear of the jaw 15 there is mounted upon the rail 13 a carriage generally indicated by thereference numeral 22, said carriage consisting in a base plate as shown whlch is formed on each longitudinal edge with a downwardly extending flange 23 and each flange 23 is formed with a rib 24 adaptgroove 14. Upon the base plate of the carnage 22 there is formed a cylinder generally indicated by the reference numeral 25, the forward end of which is reduced as at 26, and within the cylinder there is fitted a piston head 27. Between the piston head 27 and the jaw 15 there is extended a rod 28, said rod being preferably integrally connected with the piston head 27 at its associated end and its forward end connected or secured to the jaw 15 by means of a pin 29, said pin extending transversely to the rod and through the enlargement 20 as shown in Figure 2. Between the piston head 27 and the forward end of the cylinder 25 there is interposed a compression spring 30, said compression spring being in the form of acoiled spring I be observed that the end portion 31 of the cylinder is slightly reduced. The head 32 is formed with a central boss 33 through which there is threaded a nipple 34, said nipple communicating at its outer end with a three-way valve generally indicated by the reference numeral 35 and said valve in turn being connected with a compressed air supply hose 37'. The three-way valve 35 is provided with anoperating handle 38 whlch may be manipulated for permitting compressed air to enter the cylinder 26 from the hose 37 or it may be manipulated to close the inlet from the hose 37 and establish a passage between the cylinder 25 and the atmosphere.

In order to hold the carriage 22 against movement upon the rail 13 a pin 39 is extended through the rail transversely thereof and also through the downwardly extending flanges 33 of the carriage. .It also may be mentioned that in 'case the object to be gripped between the jaws 12 and-15 is large that the carriage 13 maybe moved rearwardly upon the rail 13 and a pin 39 extended through an opening 40 in the rail for holding the carriage in this position.

In operating the device heretofore do scribed, an object is placed between the jaws 12 and 15 and then the valve 35 is operated t9 admit compressed air or the like into the cylinder25. With this occurring the piston 27 will be moved longitudinally of the cylindcr 25 and in a direction for bringing the jaws 12 and 15 together and grippingthe object therebetween. It is obvious that the force with which the jaws 12 and 15 would grip the object is dependent upon the pressure of the air. When it is desired to release the object between the jaws 12 and 15, it is only necessary to manipulate the valve handle 38 to close the pipe or hose 37 and open the valve 35 leading from the cylinder 25 to the atmosphere. Upon this occuring the piston 27 will be moved to its rearmost position under the tension of the spring 30 and thus drawing apart the aws 12 and 15.

It may be mentioned that while I have shown and described the use of compressed air for operating my device, it is quite obvi'ous that a li uid under pressure may be also utilized wit equal advantages.

1. In a device of the character described, a rail, a stationary jaw at one end of the rail, a second 'aw op osing the stationar j aw and slidable longitudinally of the rai a cylinder mounted on said rail and in alignment with the second or movable jaw, a piston within said cylinder, connecting means between said piston and the movable jaw and connecting means whereby a compressed fluid may be injected into said cylinder for causing said piston to move in a direction for advancing the movable jaw toward the stationary jaw, and means associated with the piston adapted to cause the same to move in a directlon for retracting the movable jaw from the stationary jaw upon the discontinuance of the fluid pressure therein.

2. In a device of the character described, a rail, a stationary jaw formed at one end of the rail, a second jaw opposing the first named jaw and slidable longitudinall upon the rail, a carriage slidably mounted upon direction for advancing nas aae the rail to the rear of said movable jaw, means for ad'ustably holding said carriage upon the rai against longitudinal movement thereon, a cylinder and piston carried by said carriage and in alignment with said movable jaw, connectin means between said piston and the movagle jaw and means whereb compressed fluid may be injected in said cy inder for moving said piston in a the movable jaw toward the stationary jaw.

3. In a device of the character described, a rail, a stationary jaw formed at one end of the rail, a second jaw opposing the first named the rail, a carriage slidably mounted upon the rail to the rear of said movable jaw, means for adjustably holdin said carriage aw and slidable longitudinally upon upon the rail against longitu inal movement 3 thereon, a cylinder. and piston-carried by sald carriage and in alignment with said movable jaw, connecting means between said piston and the movable jaw, means whereb compressed fluid may be injected in said cyinder for moving said piston in a direction for advancing t e movable jaw toward the stationary jaw, and valve means whereby the compressed fiuid within the cylinder may be exhausted to the atmosphere.

4. In a device of the character described,

a rail, a stationary jaw, a second jaw longitudinally slidable u on the rail, a cylinder and iston mounte upon the rail and ad.- j ustalile longitudinal thereof, and connecting means between the slidable jaw and the piston.

5. In a device of the character described, a rail, a stationary jaw, a second jaw longitudinally slidable upon the rail, a power unit connected to the second jaw and adapted for retracting and advancing the same with relation to the first named jaw, and means whereby the power unit and movable jaw may be adjustably moved with relation to the stationary jaw.

6. In a device of the character described, a stationary jaw, a movable jaw, a power unit adapted to retract and advance the movable jaw withrelation to the stationary jaw, and supporting means whereby the movable jaw and said ower unit may be adjustably moved with re ation to the stationary jaw.

EVARIST GOODREAU. 

